The Ngaio Marsh Awards, popularly called the Ngaios, are literary awards presented annually in New Zealand to recognise excellence in crime fiction, mystery, and thriller writing.

The Ngaio Marsh Award for Best Crime Novel was launched in 2010 by lawyer turned journalist Craig Sisterson, who wanted to create an opportunity for great New Zealand crime, mystery, and thriller writing to be recognised and celebrated. Local crime writers were often overlooked by festival organisers and books awards in New Zealand, despite international acclaim, and up until that point New Zealand, unlike most other English-speaking countries, did not have a specific award for crime, mystery, and thriller fiction.

After discussions with many people in the New Zealand book industry, Sisterson decided to launch the Ngaio Marsh Award at the Christchurch Writers Festival in 2010, honouring both contemporary crime writers and New Zealand's most famous mystery writer in her own hometown. He sought and received the blessing of Dame Ngaio Marsh's closest living relative to honour Dame Ngaio by using her name and an artistic impression of her likeness for New Zealand's first-ever crime fiction prize.

Dame Ngaio Marsh was a New Zealand crime writer and theatre director. She was appointed a Dame Commander of the Order of the British Empire in 1966.

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